DSpace Repository

Enhanced ionisation of polyatomic molecules in intense laser pulses is due to energy upshift and field coupling of multiple orbitals

Show simple item record

dc.contributor.author Erattupuzha, Sonia
dc.contributor.author Covington, Cody L
dc.contributor.author Russakoff, Arthur
dc.contributor.author Lötstedt, Erik
dc.contributor.author Larimian, Seyedreza
dc.contributor.author Hanus, Václav
dc.contributor.author Bubin, Sergiy
dc.contributor.author Koch, Markus
dc.contributor.author Gräfe, Stefanie
dc.contributor.author Baltuška, Andrius
dc.contributor.author Xie, Xinhua
dc.contributor.author Yamanouchi, Kaoru
dc.contributor.author Varga, Kálmán
dc.contributor.author Kitzler, Markus
dc.date.accessioned 2017-08-09T09:49:40Z
dc.date.available 2017-08-09T09:49:40Z
dc.date.issued 2017-05-31
dc.identifier.citation Erattupuzha, Sonia et al. (2017) Enhanced ionisation of polyatomic molecules in intense laser pulses is due to energy upshift and field coupling of multiple orbitals. Journal of Physics B: Atomic, Molecular and Optical Physics. Volume 50. Number 12. pp. 1-18 ru_RU
dc.identifier.issn 0953-4075
dc.identifier.uri https://doi.org/10.1088/1361-6455/aa7098
dc.identifier.uri http://nur.nu.edu.kz/handle/123456789/2535
dc.description.abstract We present the results of a combined experimental and numerical study on strong-field ionisation of acetylene performed with the aim of identifying the mechanism behind the previously reported surprisingly large multi-electron ionisation probabilities of polyatomic molecules. Using coincidence momentum imaging techniques and time-dependent density functional simulations, we show that the reported efficient ionisation is due to the combined action of a significant geometrically induced energy upshift of the most relevant valence orbitals as the C–H distance stretches beyond about two times the equilibrium distance, and a strong increase in the coupling between multiple molecular orbitals concomitant with this stretch motion. The identified enhanced ionisation mechanism, which we refer to as EIC-MOUSE, is only effective for molecules aligned close to parallel to the laser polarisation direction, and is inhibited for perpendicularly aligned molecules because of a suppression of the C–H stretch motion during the onset of ionisation. ru_RU
dc.language.iso en ru_RU
dc.publisher Journal of Physics B: Atomic, Molecular and Optical Physics. https://doi.org/10.1088/1361-6455/aa7098 ru_RU
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
dc.subject coupling of multiple orbitals ru_RU
dc.subject multiple ionisation and fragmentation of polyatomic molecules ru_RU
dc.subject enhanced ionisation ru_RU
dc.subject Research Subject Categories::NATURAL SCIENCES::Physics::Atomic and molecular physics ru_RU
dc.title Enhanced ionisation of polyatomic molecules in intense laser pulses is due to energy upshift and field coupling of multiple orbitals ru_RU
dc.type Article ru_RU


Files in this item

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-ShareAlike 3.0 United States Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 3.0 United States

Video Guide

Submission guideSubmission guide

Submit your materials for publication to

NU Repository Drive

Browse

My Account

Statistics